Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m211116_024347_update_card_emails_and_ticket_emails_add_email_column.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m211116_024347_update_card_emails_and_ticket_emails_add_email_column.php on line 8